Frontiers Discovery and validation of acetyl L carnitine in serum for diagnosis of major depressive disorder and remission status through metabolomic approach L carnitine play antidepressant roles by improving brain energy metabolism, regulating neurotransmitters and neural plasticity The levels of ALC in people and rodents with depression are significantly reduced @ www.healthylifebio.com . . . # L Carnitine Linus Pauling Institute Oregon State University Depression Emotional Wellbeing, St Johns Wort, SAM e, antidepressants